The role of interface in microbubble ozonation of aromatic compounds

doi:10.1016/j.chemosphere.2018.12.174

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	The role of interface in microbubble ozonation of aromatic compounds
	Wu, C ; Li, P ; Xia, SJ ; Wang, S ; Wang, Y ; Hu, J ; Liu, ZQ ; Yu, SL
刊名	CHEMOSPHERE
	2019
卷号	220 期号:-页码:1067—1074
关键词	MASS-TRANSFER OZONE DECOMPOSITION INORGANIC-COMPOUNDS AQUEOUS-SOLUTIONS RATE CONSTANTS WATER KINETICS VELOCITY DEGRADATION PARTICLES
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2018.12.174
文献子类	期刊论文
英文摘要	Due to its high mass transfer efficiency, microbubble ozonation has been widely used in water treatment to degrade refractory compounds. Compared to conventional bubbles (diameters larger than 1 mm), microbubbles (diameter less than 50 mu m) have special interfacial characteristics that are probably advantageous in ozonation. However, the mechanisms involved are still unclear and therefore our primary aim here was to explore the interfacial effect of microbubbles during ozonation process. Phenol and nitrobenzene degradation by ozone microbubbles and conventional bubbles were carried out across a broad pH range. We found that microbubble decomposition of pollutants was markedly more efficient than conventional bubbles in terms of ozone consumption. Hydroxyl radical scavenger experiments of phenol revealed that the enhancement of microbubble might result from the increase of ozone concentration in interfacial region and a mathematical simulation further proved this synthesis by showing that ozone concentration is not homogenous throughout the reaction medium and forms a steep gradient in the liquid film of microbubbles. As for nitrobenzene, the acceleration of hydroxyl radicals was supposed to be the dominate factor which might be the consequence of high gas concentration in liquid film. These findings shed light on the mechanism of interfacial reaction in microbubble ozonation. (C) 2018 Elsevier Ltd. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31863]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Tongji Univ, Sch Environm Sci & Engn, 1239 Siping Rd, Shanghai, Peoples R China; 2.Tongji Univ, Sch Environm Sci & Engn, State Key Lab Control & Resource Reuse, 1239 Siping Rd, Shanghai, Peoples R China; 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 4.Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China; 5.Huazhong Univ Sci & Technol, Sch Environm Sci & Engn, Wuhan 430074, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Wu, C,Li, P,Xia, SJ,et al. The role of interface in microbubble ozonation of aromatic compounds[J]. CHEMOSPHERE,2019,220(-):1067—1074.
APA	Wu, C.,Li, P.,Xia, SJ.,Wang, S.,Wang, Y.,...&Yu, SL.(2019).The role of interface in microbubble ozonation of aromatic compounds.CHEMOSPHERE,220(-),1067—1074.
MLA	Wu, C,et al."The role of interface in microbubble ozonation of aromatic compounds".CHEMOSPHERE 220.-(2019):1067—1074.